The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1887-07-16
SCIENCE AND INDUSTRY.


"A San Francisco concern Is making
handsome pressed brick out of coal
ashes and cinders. These bricks have
stood the severest tests for strength,
and are made without baking or burn.
ing.
Two astronomers of the Grand Du-
cal observatory, Carlsruhc, have made
the remarkable observation that the disc
of the planet Uranus appears distinctly
elliptical instead of perfectly circular.
-Arkdnsa,D Traveller.
Russia has 4SS cotton mills with
So, 1865 looms, where $4,000 workmen
find employment, producing goods
worth S32,500,0O0 per annum. Linen
is made in 81 factories, which furnish
employment to 25,500 workmen.
"A new theory of the final destruc-
ton of the earth is that the polar ice is
penetrating the interior of the globe
like wedge, and that as soon as it
reaches the furnace there will be an ex-
plosion that will split tho world into
pieces too small for truck patches -
Franb Leslie's Newspaper.
-Carbonic acid, produced by the
action of vinegar on marble, is supposed
to have been used as an anasthetic by
the ancient Egyptians and Greeks. M.
Ch. Ozanam reports to the Paris Bio
logical Society that anmsthesia induced
by carbonic acid is very complete. may
last long time. and the gas, of course,
being mixed with air, is without danger.
Boston Budget.
Professor Thomson is quoted as
predicting that when the means of
utilizing the power of creating quick
heating by electricity is better under
stood, it will be used in every workshop
for welding, forging, and other pur-
poses. 1t would be well for our man
ufacturers to watch the progress of the
adaptation of electricity to manufacture
ing purposes. 4Age of Steel.
Augusta, Ga, has twelve cotton
factories worth S6,670,000, employing
1926 persons, who operate 212,336
spindles. Water-power costs $3.50 per
horsepower there; in New England it
costs Si2. 1t twould not pay to use coal
if it were furnished for nothing. About
80. 1000 bales of cotton are consumed
annually.
Prof. Julius Wiesmer has conducted
an investigation on the reasons why
paper becomes yellow on standing ex-
posed to the light. He shows that the
yellowing of wood pulp paper is an
oxidation process caused by light, and
that moisture aids it very much. If
the paper pulp is entirely free from
matters other than cellulose, the yell
lowing will not take place.-N. Y. In
dependent.
AS guide to the observation OF
travellers and explorers, DR.. Topinard,
the well-known French anthropologist,
has published system of classifying
eye-colors and hair-colors. He makes
four e-colors-dark, medium, light
blue, and other light hues; and five
ir-colors-black, dark-brown, me-
dium, blonde and red. By recording
the characteristic colors of the eyes and
hair of savage people according to this
classification, travellers will give an
accuracy to their observations which is
now often wanting.-N. Y. Ledger.
A new trade for women is that Of
"neighborhood darner." The woman
who follows it has for her customers q
dozen or twenty households, each of
which she visits weekly. and spends a
few hours in doing up the family darn
ing and mending, including the ripping
and cleansing of old gowns. Her en-
gagements are systematized and she
never lacks work. Some of these
members make a specially of repairing
lace and other delicate fabrics. The
pay is fairly good, and the professional
mender is a grea. blessing to busy
housekeepers with large families
Golden Rule.